Hammer drive bolt anchor, bridle ring, and cable clamp



p i 7, 9 '7 H. w. PLEISTER I,799,Z4 5

HAMMER DRIVE BOLT ANCHOR, BRTDLE RING, AND CABLE CLAMP Filed July 21,.1928

f 7 M YM 1 Patented Apr. 7 1931 i UNITED?" rrsnr FFICE HENRY w.riinis'rnaor wEsrrinLn, NEW JERSEY, AssIeNoR r0 HENRY i3. N'EWHALLcoRroRArroN, or e-anwoon, NEW JERSEY, A CORPORATION or NEW JERSEY HAMMERDRIVE Rom exc ton, BRIDLE ina, AND CABLECLAMP Application'filed July e1,1928. Serial No. 294,379.

My invention relates to the combination of a hammer drive bolt anchorand a bridle ring, and also to a bridle ring as a separate article ofmanufacture. V 5 My invention further relates to a cable clamp and meansto yieldingly hold it against the surface port." V s Myinventionfurtherrelatcs to a combined 1 hammer drive bolt anchor, cable clamp andbridle ring, in which the bridle ring performs not-only its accustomedfunction of supporting bridle or drop wires, but also acts as a springto yieldingly press the cable clamp against a wall or other suitablesupport.

My invention further relates to certain combination, sub-combination,articles of manufacture and details of construction, all of which willbe more fully hereinafter described and pointed out in the claims.

In the figures I have shown different embodiments of my invention, thesame reference numerals refer to similar parts of the several figures.

Fig. 1 is'a perspective view of a nail expansion shield;

Fig. 2 is a perspective view of the preferred form of bridle ring;

Fig. 3 is a perspective view of a nail, having an excessively long shankfor the partic ular size nail expansion shield with which it is used,such as shown in Fig. 1;

Fig. 4 is. a vertical section showing the first step in expanding theshield and in connecting the bridle ring to the excessively long shankof the nail;

Fig. 5' is a vertical section, similar to Fig. 4, showing the finalposition of the nail; the nail expansion being expanded and the hook endof the bridle ring being hooked over the excessively long shank of thenail;

Fig. 6 is a vertical section showing the manner of yieldingly'holding acable clamp against an irregular surface, the expansion shield beingomitted in this figure; and

Fig. 7'is a front elevation of Fig. 6.

In my invention I employ a nail 1, or other non-rotating holding member,having an excessively long shank 2. This nail may be driven directlyinto a support 3 of wood or of a wall or other suitable supother similarmaterial, (Fig. 6 but i preferably employed with a nail expansion shield4:, which is mountedin a hole 5, drilled or otherwise formed in a wail 6of stone, concrete, brick, terra-cotta or similar material into which itis not, feasible to drive the point of a nail. This nail is preferablythe ordinary wire nail of commerce having a uniform shank 2, the shankbeinglong enough to pi'otrude from the nail expansion shield 4, ifemployed, or from the wall of wood 3 or other similar materlal, if; anexpansion shield is not employed. The distance that the shank 2. willprotrude can be readily determined by the depth to whichthe hole 5 isdrilled, so

that when the point 6 reaches the end of the hole 5 the shank willprotrude to approxi-. mately the distance desired, In driving the nailinto, a. wood support 3, the distance of protu sion can be determined bythe eye, due weight being given to the fact that the nail must be drivenin sufficiently to form a firm bond or support for the bridle ring 7,Fig. 2.

This bridle ring 7 is preferably formed of spring wire, and in thepreferred construction shown in Fig. 2 one arm 8 has its end 9turnedback upon itself to forma closed eye 10, the other arm 11 beingbent to form a hook l2. i V

In positioning the bridle ring, the end 6 of the nail 2 is passedthrough the closed eye 10'- of the bridle ring, and thence intothe axialbore .13 of the nail expansion 4; blows of a hammer, not shown, upon thehead 14L of the nail serve to drive the nail into the expansion andexpand it. The distance that the nail will be driven into the expansionis preferably, v

though not necessarily, determined by the depth'of the hole 5. Theoperator can readily determine theproper distance, after the expansionshield has been expanded,whether or not the end of the nail 6 contactswith the bottom of the hole 5. The difierent bri olle wires or dropwires 15- 15 may be then brought, over. the loose arm 11, when this 0arm is then lifted by the operator so that the book 12 can be hookedover the shank 2 of the nail adjacent the head 14;. To perform thisaction the parts are preferably so formed that it. is necessary tospring the arms 8 and 11 towards each other, which puts them undertension, the hook 12 being held by yielding pressure against the head 14of the nail, while the closed eye will bear with yielding pressureagainst the shield 41 so that vibration will not loosen the bridle ring.Of course, in some cases it may be desirable to hook the hook 12 overthe shank 2 of the nail before the bridle or drop wires 15 15 are placedwithin the bridlering, requiring" them to be later threaded through thebridle ring. \Vhether the first or the second procedure is followed willdepend upon the exigency of the situation where the lineman is using thebridle rings at the time.

The end 11 and open hook 12 are preferably, though not necessarily, bentto form a concave surface 20 to cooperate with the head 14 of the nail1.

My invention further relates to a cable clamp and means to secure it inposition. There are locations in which a cable clamp 16 has to bemounted on a surface-18 of a wall or other suitable support whetherformed of wood, masonry, brick or other material, which may be extremelyrough and uneven, and it is desirable to have the base 19 of the cableclamp conform to the irregularities of the wall with which it is incontact.

I have shown, for example, in Figs. 4 and 5 the cable clamp 16 held byyielding pressure against the irregular surface 18, which happens to beof wood in this figure, though it is of course to be understood that itmay be masonry or any other material. This yielding pressure is a spring7 which performs also the function of a bridle ring and is the samebridle ring previously described at length, and shown in detail in Fig.2. Vhile I have shown in Fig. t the nail being driven directly into thesupport, because in this figure the support is of wood, it is of courseto be understood that in masonry or other similar material a nailexpansion shield such as 4 a would be employed. Preferably, though notnecessarily, the bridle ring 7 if it is to yieldingly hold the cableclamp, such as 16, to a wall or suitable support, may be formed oflittle heavier spring wire than that required when it is employed simplyas a bridle ring, as shown in Figures 2, 4 and 5. Of course, andparticularly when it is used in cooperation with a cable clamp, thetension of the bridle ring may be increased by givingone or 0 twoadditional taps of the hammer, after the hook 12 is hooked over theshank of the nail 2.

Having thus described this invention in connection with illustrativeembodiments thereof, to the details of which I do not de sire to belimited, what is claimed as new and what is desired to secure by LettersPatent is set forth in the appended claims.

\Vhat I claim is z-- I 1. The combination in a hammer drivebolt anchorof a nail expansion shield, a nail having a shank longer than necessaryto expand the shield permitting a portion of the shank to protrude fromthe shield and a bridle ring formed of a U-shaped loop of wire bent toform resiliently acting portions with one end of the U-shaped loopprovided with an eye and the other end provided with a hook to hook overthe shank of the nail, both the eye and hook adapted to slidably engagethe shank.

2. The combination of a cable clamp, a nail to support it upon a supportand provided with a protruding shank, a bridle ring formed of a U-shapedloop of wire bent to form resiliently acting portions, one end of theU-shaped loop provided with an'eye andthe other portion with a hook topermit the hook to be hooked over the protruding shank of the nail afterthe bridle or drop wires are mounted in the bridle ring, both the eyeand the hook of the U-shaped loop adapted to slid ably engage the shankof the nail and be compressed between the head of the nail and theclamp, to yieldingly hold the cable clamp against the wall or othersupport.

HENRY W. PLEISTEB.

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